Machine for pointing and threading bolts.



' Patented Jan. I4, |902. C. A. JOHNSON.

MACHINE FOR PINTING AND THREADNG BOLTS.

(Application iled Apr. 5, 1901.!

(No Model.)

4 Sheets-Sheet I.

Illlllllll No. 69l,3|6. v Patented 1an. I4, |902.

C. A. JOHNSON. v

MACHINE-FUR PDINTING AND THBEADING BOLTS.

(Appuction med Apr. u, 1901.)

4 Sheets-She'et 2.

(No Model.)

o.. wAsrnNnToN D c No. 69|,3|6. Patented lan. I4, |902.

C. A. JOHNSON. Y

MACHINE FUR POINTING AND THREADING BLTS.

v (Application medApns, 1901.) (No Model.) 4 Sheets-Sheet 3.

4- n 5 l, A 66g im. i

l l l I l No. 69|,3|6. Paiented Jan. I4, |902.

c. A. JoHNsoN.

MACHINE FR POINTING AND THREADING BOLTS.

(Application filed Ayn 5, 1901.) (No Model.) 4 Sheets-Sheet 4.

Fg/' fyi] ffy/2 6 IEE; Il @if me mnms news co., mow-uwe. NASHINGTON D c UNITED STATES PATENT OFFICE.

CHARLES A. JOHNSON, OF UNIONVILLE, CONNECTICUT, ASSIGNOR TO THE i UPSON NUT COMPANY, OF UNIONVILLE, CONNECTICUT, A JOINT-STOCK COMPANY OF CONNECTICUT.

MACHINE FOR POINTING AD -THREADING BOLTS.

SBEClFIGATlON forming part of Letters Patent N o. 691,316, dated anuary 14, 1902.

Application filed April 5, 1901. Serial No. 54,508- (NO model.)

To @ZZ whom it may con/cern,.-

Beit known that I, CHARLES A. JOHNSON, a citizen of the United States, and a resident of Unionville, in the county of Hartford and State of Connecticut, have invented certain new and useful Machines for Pointing and 'Threading Bolts,of which the following, taken in connection With the accompanying drawings, is a full, clear, and exact description,

1o whereby any one skilled in the art might make and use the same.

The invention relates in general to metalworking machines, and more particularly to machines of this class which are especially adapted for finishing blanks which have been previously formed, but require certain machine-work, as (in a bolt) pointing and threading. The machine shown andA described is adapted to automatically pick up the blanks zo from a hopper or retainer and, passing them individually into a feeding mechanism, transfer them to a carrier, Where they are first subjected to the action of a pointing-tool and then carried forward, where they are acted upon by a die which cuts the proper thread,

all ofthe operations being entirely automatic.

After the bolts are pointed and threaded they are released from the carrier, when they may fall into any suitable receptacle.

Many machines have heretofore been devised and used for automatically threading bolts, but in all of these machines there have been great faults. For instance, no provision has been made for insuring perfect action upon the individual blanks nor has provision been made forgiving a resilient action between the several main operative parts of the machine, such as to preclude the liability of breaking operating-levers and other parts 0f 4o the mechanism when for any reason a portion of the mechanism becomes cramped, as would be the case should a blank of improper size be inadvertently introduced to the machine. As is often the case in automatic machines, a blank will not be picked up in every instance by the mechanism as is intended, and in such case the parts becoming cramped while the power is still effective are fractured and render the machine inoperative.

5o The object of the presentinvcntion is to obviate, as far as possible, the many faults above described and to provide a combined bolt pointing and threading machine which will be absolutely automatic iu its action, permitting avery rapid action of the tools upon the blank, at the same time insuring a perfect working of the several parts of the mechanism.

Another and quite material feature of the invention is to so arrange the several parts or, as they maybe called, mechanisms that there will be no liability of misadjustment and to eliminate, as far as possible, the disruptive effects which would be incident to cramping or binding between any of the elements of the mechanism and the blanks.

A quite material object is to so arrange the several mechanisms and their parts that there will be such a resilient action between the main actuating parts and the working parts that the liability offracture from cramping will be reduced to a minimum,even though a bolt of improper size or a slug of any sort be inadvertently permitted to enter the machine, and at the same time to provide means for rejecting such improper bolt or slug.

To accomplish these results, the several mechanisms or parts of the main mechanism are, as far as possible,actuatyed resiliently under spring tension and acting through the springs operate the several more delicate portions of the machine in such manner that suficient flexibilityis assured to prevent breakage of the parts.

A further object of the invention is to pro; vide a means whereby the operating mechan-y isms may be readily adjusted to act upon blanks of different sizes without in any Way interfering with the main portion or tool-head section, which carries the cutters for acting upon the blanks.

Referring to the drawings, Figure l is a View in front elevation of the improved machine, some of the parts being omitted for the sake of clearness. Fig. 2 is a rear View in elevation of the machine. Fig. 3 is a central sectional view of the threading-spindle and appurtenant parts. Fig. 4 is a detailed View, on enlarged scale, showing the carrierplate and appurtenant feeding mechanism in IOO elevation, parts being broken away to show construction. Fig.5 is adetailed View looking toward the left as regards Fig. et and showing the feeding mechanism and stop-plate for the cutter-heads. Fig. 6 is an end view, in enlarged scale, of the machine looking from the right of Fig. 1 with parts broken away. Fig. 7 is a rear face view of the index-plate and actuating mechanism. Fig. 8 is a detailed front face view of the carrier-plate and appurtenant parts. Fig. 9 is a sectional view through the carrier and index plates. Fig. 10 is a detailed view of the carrier plate with the gage-plates removed. Fig. 1l is a detailed front-faced view of a carrier-plate adapted to be used with machine-bolts. Fig. 12 is a sectional view on the line XX of Fig. 11. Fig. 13 is a detailed plan view, in enlarged scale, of a portion of the feed-channel, showing the stops and separators. Fig. 14 is a detailed view, in front elevation, of the oscillatory bolt-supporter. Fig. l5 is an enlarged detail View showing the adjusting means for the pointingspindle- In the accompanying drawings the numeral l denotes the bed of the machine, which is preferably so formed that it will retain the finished bolts which are rejected from the' machine proper 'and also the oil which may be used upon the tools. Upon this bed is supported a main frame 2, which has an upwardly-extending portion 3,'to which is secured the several portions of the operating mechanism. Centrally of this frame and support 3 and secured thereto is arranged a framework, forming suitable bearings for the spindles of the pointing vand threading tools and the cam-shaft for operating the several parts of the mechanism. At one side of this mechanism and adjnstably secu red to the backing 3 is the bolt feeding and holding mechanism 4,while at the opposite side or end of the machineisadjustably secured the hopperfor retaining the bolt-blanks. Both the feeding and holding mechanism and the hopper and its actuating mechanism are secured to supports marked 6 and`7, respectively, and these supports project through the backing 3 and are connected by an adjustable bar 8, screwthreaded at its opposite ends and engaging at one end a rack-bar 9,which, cooperating with a pinion mounted in the block lO, maybe moved to any desired degree through an operatinghandle actuating said pinion through the squared end of its shaft l1. Clamping-levers 12 13 secure their respective mechanisms in any desired position of adj ustment. It will be seen from this arrangement that while the cutting-tools always maintain the same relative position as regards the frame of the machine the parts located at either end of the cutter mechanism may be moved so that the feeding and carrying mechanism may be brought closer to or removed farther from the cutting-tools without in any way disturbing the adjustment between said mechanism and the hopper. Nevertheless the hopper and the mechanism for feeding and carrying the bolts may be adjusted relatively, but when once arranged need little adjustment for dierent sizes of blanks.

Operating mechanism or cutters are arranged centrally of the machine, and each is driven by an independent belt. Their position never changes except as they are moved forward to perform their work upon the blanks and retracted. Journaled in the supports of the cutter-spindles is a short shaft driven through the medium of a belt and pulley 14 l5, and this shaft is provided with a pinion which meshes with a gear 16 of the main camshaft 17, which bears the cams for controlling the movement of the several parts of the machine. This cam-shaft has near one end a bevel-gear 18, which meshes with a bevel-gear 19, fast on the end of the hopper-shaft 21. The hopper-shaft, with its hopper 22, is constantly rotated, and by its rotation the contained blanks are pushed onto the tilting picker 23, which catches the blanks just under their heads. A detent-finger 24 prevents the'picker 23 from descending into the mass of blanks to an extent which would cause it to become overloaded and cramped. It will be noted that the spring-finger 24 overlies the tilting picker 23 and is bent backward adja- Acent to said finger, so that as the picker descends into the mass of bolts the lower bent end of the detent-finger 21 will rest upon the surface of the mass of bolts and prevent the picker 23 from digging int-o vthe blanks to a sufficient degree to cause overloading and cramping. A reciprocating rod 25, through the medium of a rock-bar 2G, actuated by a cam 27, causes the outer end of the picker to be raised at stated intervals to a sufficient degree to cause the bolt-blanks to slide downward under the action of gravityinto the feedguide 28. This feed-guide has an open space through its center 29 of a sufficient width to permit free movement of the bolt-blanks, but is only wide enough to hold them in a single line. As the blanks pass down the feed-guide IOO IIO

they are arrested in their movement by a stop d 30, which projects through the side wall of the guide into the channel 2S) and prevents further movement ofthe blanks until Withdrawn by a cam 3l. This cam is mounted upon a sleeve 32, which also bearsa cam 33 just in advance of the cam 29 and adapted to withdraw a second stop 34, mounted upon a lever 35, in substantially the same manner as the stop of the lever 36. These two stops are located just asufticient distance apart to permit a single bolt-blank to lie between them,and the stop 30 is beveled on its side adjacent to the stop 34, so that as it is pushed forward into the guide it forces against the blank lying between the two stops, and as soon as the cam 33 oscillates its lever 35 the blank is forced forward and drops into a recess 37 in the feed-slide 38. It will be seen from this arrangement of stops that but a single blank can fall into the recess 37 until the machine has completed one entire movement. In other words, it might be stated that the blanks are passed to the feeding and carrying mechanism only when said mechanism is actuated normally. 1t is apparent as the cams 31 and 33 are mounted upon one of the two sleeves which are connected resiliently bythe spring 44 that should the feeding mechanism be cramped and fail to work the cams 31 33 will also be held in inoperative position, and only when the feedslide is actuated properly by its cam will the cams 3l 33 move to actuate their respective levers and pass a blank'to the feed-slide. This feed-slide 3S, through a ball-and-socket joint 39 upon the end ofthe lever 40, which is pivoted to an upright extension 41 of the sleeve 32, is oscillated by the rock-shaft 42, which supports both the sleeve 32 and an inner sleeve 43, splined to the shaft 42. The two lastnamed sleeves are fitted within one another and the movement of the sleeve 43 is transmittedto the sleeve 32 by a spring 44 whenever the cam-lever 45 is engaged by the cam 46 upon the main cam-shaft 17. This tensionspring 44 is really the only connection between the two sleeves, and it is apparent that if for any reason a blank becomes cramped in the feed-slide the movement of the lever' 45, acted upon by its cam, will simply put the spring44undertension withoutundulystraining the parts of the mechanism, as would be the case if a solid connection existed between said lever and the feed-slide.

Arranged just at one side of the feed-slide is a carrier-plate 47, which is rotated at stated intervals by a mechanism connected with the camshaft17. Atdiametricallyoppositepoints in the periphery of this feed-plate are arranged recesses 48 of a size just sufficient to receive the square shoulder below the head of the bolt, `(in case carriage-bolts are being finished,) and these recesses are preferably formed in hardened plates 49, rotarily mounted in recesses 50 in the feed-plate and se-v cured in place by central bolts 51 and adjusting and locking screws 52. These plates 49 are preferably formed with a plurality of peripheral notches which may be of the same size or of different sizes to accommodate various sizes of bolts. To center and lock the plates, with their notches in proper position to engage the bolt, a pair of conical adjusting-screws 53 54 are passed through the back of the feed-plate and with their conical ends engage the edges of two of the peripheral openingsor notches in the plates 49. It will be seen from this arrangement that by loosening or tightening one or the other of said conical-ended screws the plates 49 may be adjusted and centralized to a nicety with relation to the notch which is to receive the bolt.

In- Figs. 11 and 12 there is shown a special form of carrier-plate adapted to be used with what is known asa square-headed or machined bolt, and in this form of plate a squared opening 55 is formed in one section of the plate,and justin front of it and centralized with relation to it is a semicircular opening 56, formed, preferably, in a supplemental plate 57. In the case of the vplate just described the squared head fits the recess 55, While the rounded portion of the shank rests in the semieircular portion 56 of the plate 57. It is of course understood that disks having notches of different sizes may be used in the openings 50 where different sizes of bolts are being operated upon.

From the point where the feed-slide 38 introduces the blank to the carrier-plate 47 to a point just beyond the line of action of the last tool the edge of the'plate 47 is incased by a guide-frame 58, which prevents disengagement of the blank from the plate until it has been carried beyond the line of action of the tools. At the point where the blank is held for action of the tools adjustable space-bars 59 are arranged, and at thissame point and just in the rear of the head of the blank when it is held for operation are adjustable screws 60, the bars 59 and screws 60 engaging the blank to insure a proper seating with relation to the plate 47.

To produce a proper intermittent movement of the carrier-plate 47 so that the tools for pointing and threading may perform their function, a ratchet mechanism 61 is provided, consisting of a carrier 62, within which is carried a bevel spring-pressed pawl 63, adapted to engage recesses in the rear of an indexplate 64, secured to and moving with the carrier-plate 47. This index-plate has peripheral index-notches 65, preferably formed in hardened plates mortised into the index-plate and arranged at points in the periphery of said plate correspondingto the bolt-notches 48 of the carrier-plate. The carrier 62isloosely mounted as regards the index-plate 64 andis oscillated at the proper instant by the camshaft 42, through the medium of a lever 65 and link 66, pivotally connected to the lever 65' and carrier 62. The cam-shaft 42 is moved in one direction by the cam 46 on the main cam-shaft 17 whenever said cam engages the lever 45 and depends for its opposite movement upon a spring 67, attached to a lever 68 at one end and to the frame of the machine at its other end. Just below the index-plate 64 and with an upturned end adapted to engage the peripheral notches 65 is a lever 69, which constitutes the index-lever of the machine, and this is withdrawn from contact with the index-plate whenever the lever 65 descends under the action of the cam 46 when it rocks the shaft 42. An adjustable stop 70 being secured to the index-lever and underlying the lever 65 forms a convenient means for securing a proper adjustment relatively of the index-lever and its operating-lever 65. The pawl 63, arranged in the carrier 62, engages the ratchet-plate 71, which is provided with suitable notches and is preferably a hardened plate secured to the index-plate 64,

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corresponding in number with Vthe notches of the index-plate and the carrier-plate.

It will be seen from the above description that the carrierplate through the ratchet mechanism and index mechanism described secures its forward movement through a resilient means, as the spring 67, while on its backward movement (when it is getting into position to receive a blank) it is positively moved by the cam-shaft 17 and intermediate cam and lever connections. Thus should a blank for any reason cramp the carrier-plate and prevent its proper forward movement to its indexing position the pawl 69 would not,of course, come into registering position with an index-point of the plate 64, and the latter would be swung backward, ejecting the blank when it reaches and is delected by the pawl 74:. Thus the mechanism which ordinarily moves the carrier-plate forward with its bolt into an indexing position is coincident with the mechanism for reversing the movement of the plate 'when for any reason said plate is stopped in its movement between indexing-points. Y

In Figs. 4.-, 5, 8, and 9 of the drawings there is shown a guide 72 having an upturned loop 73 at its upper end and adjustably secured to a fixed part of the machine, so that it may be moved toward and away froml the carrierplate 47 and secured in any desired position of adjustment. This guide '72 serves a double purpose of holding a long bolt at substantially right angles to the face of the carrierplate and at the same time catches said long bolt in its loop 73. Located just back of the loop 73 is a pawl 74, which trips over the boltblanks as they are carried forward in the carrier plate, and should the carrier plate move backward with a bolt after it has passed this pawl the bolt will be engaged by the upper face of the pawl and thrown out of the carrier-plate through an opening 7 5, provided for the purpose in the guide 5S. The purpose and function of the pawl 74 and guide 72 are to prevent too long a bolt getting into Vposition to be acted upon by the cutters and to eject said bolt from the carrier-plate. It is apparent that should a long bolt be inadvertently permitted to enter the machine it might through its length and weight trip to such an extent as to cramp between the carrier-plate and the guide surrounding it. The guide and stop bar 72 prevents this, and when the bolt reaches the loop 7 3 it cramps the carrier-plate, preventing a sufficient movement of said plate to permit the index-lever-to engage and lock the index-plate 64:. Now upon the return movement ofthe carrier 62'and its pawl there is suiiicient frictional contact between the pawl and index-plate to turn said plate and its connected carrier-plate backward, and upon this backward movement the long bolt is engaged by the pawl 7l and thrown out of the carrier-plate.

In Figs. 1 and 14 there is shown an oscillav engaging position with the bolt-blanks.

tion assumed by the bolts during the action of the tools with" adjustable plates 77', beveled at their upper and adjacent ends to form a rest for the boltj ust in back of the portion to be finished. During the intermittent rotary movement of the carrier-plate with its boltblanks the cam-lever '78 of this supporter is engaged by the cam 79 and the supporter is depressed until the carrier-plate hasbeeu moved forward into its indexing position, whereupon the cam 79 trips over the lever 78 a'nd permits a spring 80 to return the supporter to By having this supportel` spring-actuated upon its return movement it is apparent that should for Vany reason the cam 79 fail to act at the proper instant the bolt-blank engaging one of the beveled plates 77 would cause the supporter to be tilted without unduly cramping the mechanism operating t-he carrier-plate. Secured to and constantly rotating with the cam-shaft 17 is a double-faced cam S1, which actuates a pair of levers 82 S3, disposed on opposite sides of said cam and connected by a spring 84. One ofV these levers 82 engages at its upper end, through a yoke S5, the end of the pointing-spindle 86, while the other lever S3, through a yoke 87, engages and moves the threading-spindle S8. These two spindles 86 and S8 are movable longitudinally of their bearings and bear at their ends adjacent to the carrier-plate proper tools for operating upon the bolt-blanks. These tools may be of any desired pattern and need no specific or detailed explanation, thoughit is essential that an automaticallyopening die be used in connection with the` spindle 8S for cutting the thread on the blanks. Itv is to be noted that with this arrangement of the cam 8l and cam-levers resiliently connected one of the spindles, as 88, is forced forward by the action of the cam'to do its work and returned by the spring 84E, while the lever S2 is forced forward against the blank by the spring Si and retracted by the cam Sl. The bolt-pointing spindle 86 is located just in line with the upper edge of the carrier-plate 47 and at one of the pausingpoints of said plate and is 4driven by any suitable means, as. a belt S9 and pulley 90. The spindle 8S is mounted one-quarter of a revolution in advance of the spindle 86 and coincident with the second notch of the carrier-plate when it is at its pausing-point.

as by a belt 91 and pulley 92.

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Ass

Any form of cutting-tool for forming the thread on the bolt-blank may be used, but preferably a die of the class known as the collapsible or opening die. These dies being so well known in the art, a detailed description 'is unnecessary, though in the machine shown it is preferable to use such a die as is shown in Patent No. 630,712, dated August 8, 1899, and issued to me. The mechanism for operating said die, however, is shown in Fig. 1 and in detail in Fig. 3. Referring to these figures, the main drivingsleeve 93 supports the pulley 92, and within this sleeve is a die-operating rod 94.` The sleeve 93 is provided at one end witha shoulder 95 and a threaded portion 96, adapted to receive the automatic die 97. A connection is formed Within the sleeve 93 and rod 94 through a pin 98, fast in said rod and projecting through a slot 99, formed in. the sleeve 93. This pin 9S engages externally ofthe sleeve 93 a sectional sleeve 100, one section of which, 10], is preferably formed integral with the driving-pulley 92. The adjacent ends of the divided sleeve are beveled, as at 102, and a beveled ring 103 engages these beveled surfaces and in a normal position of the parts rests concentric with the rod 91 and adjacent parts. rIhe sleeve 93 is recessed at its rear end, and within the recess rests a spring 104, which at its outer end bears against a thimble 105, arranged within the yoked sleeve 106, this yo ked sleeve having an annular recess 107, which is engaged by the yoke S7 of the lever 83. A rod 108 forms a stiffener and support between the sleeve 93 and the yoke-sleeve 106 and is provided at its 'outer end with a stop-nut 109, adapted to prevent excessive rearward movement of the sleeve 106.

By the construction and arrangement of parts just described it will be seen that the main spindle, with its appurtenant mechanism, is advanced by the cam 83 resiliently through the action of the sleeve 106 and interposed spring 104, thus insuringa cushion-v ing eect between the die and the blank .as they come into operative engagement. When the threading-spindle is advanced, the ring 103 is carried over a knock-off lever 110, actuated bythe knock-off cam 111 through the medium of a lever 112, sleeved upon the main cam-shaft 17, and whenever the cam 111 actuates and raises the knock-off lever 110 the latter disposes the cam-ring 103, forcing it into a position eccentric with the axis of the cutter-spindle, thereby forcing the sleeve 100 away from the sleeve 101 and carrying back the die-operating rod 94 to open the chasers of said die.

It may be possible, as in the case of a short bolt, for the cam 111 and knock-off lever 110 to become inoperative at the proper instant, and a supplemental knock-off lever 112 is provided to take care of such emergencies. This lever has an arm 113 projecting upward and adapted to be engaged by a cam 114, (shown Ward with its 'blank the proper distance to index, a stop-plate 115 is provided, which has peripheral notches formed substantially con- `centric with the heads of the operating-tools and corresponding in number and position with the index-points of the carrier-plate. This plate 115 is adjustably secured upon a short shaft 116, which moves with the carrierplate, and unless the plate 115 is in proper position with one of its peripheral notches coincident with the line of movement of the cutter-head said cutter-heads cannot move forward.

While there have been described herein in detail several mechanisms for accomplishing the results sought, the invention is not necessarily limited to the precise constructions and arrangements shown and described, as obviously the details may be very materially. modified and yet come within the scope of the invention, which contemplates any means for automatically picking u p, transferring, pointing, and threading bolts automatically, insuring such action between the several parts of the mechanism as' to obtain precision of action and permit a resiliency of action be; tween the several parts, such as will prevent the fracture of the several parts of the mechanism and yet permit a high rate of speed during the several operations.

Having described my invention, I declare that what I claim is- 1. In combination in a machine of the class specified, a hopper adapted to contain blanks, a carrier adapted to receive the blanks and subject them to a cutting-tool, means intermediate of the hopper and carrier adapted to pick up and transfer the blanks, and means for resiliently actuating the carrier at predetermined intervals.

2. In combination in a machine of the class specified including` a hopper, blank-t-ransferring mechanism and operating-spindles, of a carrier-plate adapted to Vreceive the blanks, subject them to the action of the tools and eject them after the operation of said tools and means for ejecting blanks of improper length.

3. In combination in a machine ofthe class specified, cutter-spindles, a blank-retaining mechanism and a feeding and carrying mechanism arranged adjacent to the operating'- spindles, and interconnected mechanism for adjusting and locking said last-named mechanislns relatively to the cutter-spindles.

4. In combination in a machine of the class IOO los

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' specified, cutter-spindles and actuating mech- Ils anism therefor, a blank-retaining mechanism and a feeding and carrying mechanism arranged adjacent to the cutter-spindles, and connections between said last-named mechanisms whereby they may be adj usted relatively to each other and relatively to the cutter-spindles.

5. In combination in a machine of the class specified, Work-spindles and operating mechanism therefor, a blank-retaining mechanism and feeding and carrying mechanism, and means intermediate of said, mechanisms. whereby they may be simultaneously adjusted for operation upon blanks of various sizes. 6. In combination in a machine of the class specied, a main frame, cutter-spindles movably mounted in said frame, a hopper adapt-ed to receive blanks and means for actuating the hopper, said mechanism being adjustably secured tothe main frame, and carrying and feeding mechanism adjustably mounted upon the main frame, adjusting connections intermediate of'the hopper mechanism and carrier and feeding mechanism, and means for 'automatically transferring the blanks from the hopper to the feeding and carrying mechanism.

7. In combination in a machine of the class specified, a cutter mechanism and means for.

actuating it, a'hopper and actuating mechanism, a feeding and carrying` mechanism and connections intermediate of said mechanisms whereby they may be adjusted with relation to the cutter mechanism without disturbing their adjustment relatively to each other.

8. In combination in a' machine of the classl specified, a hopper adapted to receive blanks, a feeding and carrying mechanism operatively mounted with relation to the hopper, a transferring mechanism intermediate of the hopper and feeding and carrying mechanism comprising a gravit y-guide and an oscillatory picker adapted to pick up the blanks and pass them to the gravity-guide, and means borne upon the picker adapted to rest upon the blanks and prevent abnormal loading of the picker.

9. In combination in a machineof the class specified, a hopper and feeding and carrying mechanisms, means adapted to pick up blanks' from the hopper, a guide adapted to receive said blanks, and mechanism for individually passing said blanks from the guide to the feeding and carrying mechanisms, said mechanism embodying means for preventing its operation whenever the machine is not running normally.

l0. In combination with a hopper and feedguide adapted to receive blanks picked up from the'hopper, a feeding mechanism and a carrying mechanism, the latter adapted to receive blanks from the former and pass them into the line of action of a tool or tools, and means intermediate of the hopper and carrying mechanism adapted to feed blanks individually tothe feeding mechanism,said means including mechanism adapted to prevent the feed except when the feeding mechanism and carrying mechanism are operating synchronously.

Il. In combination wit-h a hopper and feedguide adapted to ,receive blanks picked up from the hopper, means for picking up and transferring blanks to the guide, feeding and carrying mechanism and a stop mechanism adapted for stopping, separating and individual feeding actions with relation to the blanks in the guide, and means for preventing the actuation of said stop mechanism except when the feeding and carrying mechanisms are performing their function and in normal operation. y

12. In combination in a machine of the class specified, a hopper adapted to receive blanks, a feed mechanism adapted to receive and transfer the blanks, means for individually passing the blanks from the hopper to the feed mechanism, and resilient means for actuating the feed mechanism whereby said feed mechanism receives a blank only when it is actuated normally.

13. In combinationin amachine of the class specified, a hopper adapted to receive blanks, a carrier-plate, a main cam-shaft, and a cam for actuating said feed mechanism through the medium of two relatively movable members provided withrresilient connections, a stop mechanism, and means borne upon one of said relatively movable members whereby the stop mechanism is actuated only when both members move simultaneously.

14. In combination in a machine of the class specified, ahopper adapted to receive blanks, a feed mechanism adapted to feed said blanks, a stop mechanism intermediate of the hopper and feed mechanism adapted to pass blanks individually to the mechanism, said mechanism including a pair of stops, and an actuating mechanism therefor interconnected resiliently with the actuating mechanism of the feed mechanism whereby upon a normal action of said feed mechanism, the stop mechanism is actuated to pass a blank.

15. In combination in a feeding mechanism for bolt pointing and threading machines, a reciprocating feed -block, a rotary cam for actuating said block, an oscillatory mechanism including a cam-lever adapted to be actuated by the cam, connections intermediate of the feed-block and oscillatory member, and resilient connections intermediate of said connections and the cam-lever.

I6. In combinationina machine of the class specified, a hopper adapted to receive blanks, means for picking up and transferring said blanks to a feed mechanism, resiliently-actuated feed mechanism for feeding the blanks, and a resiliently-actuated carrier-plate adapted to receive and carry the blanks forward from the feed mechanism.

17. In combination in a bolt pointing and threading machine, means for automatically picking up and transferring the blanks, a

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feed mechanism adapted to receive the blanks, a carrier-plate operatively mounted with relation to the feed mechanism and resiliently actuated in one direction.

18. In combination in a bolt pointingland threading machine., means for picking up and transferring the blainks, a feed mechanism and carrier-plate arranged adjacent to the feed mechanism, resilient means for moving said carrier-plate,indexing mechanism operatively arranged with relation to the carrierplate and means for rejecting blanks of improper length from the carrierplate.

19. In combination in a feeding and carrying mechanism for bolt pointing and threading machines, a feed-slide, a carrier-plate operatively mounted with relation to the feedslide and provided with openings to receivel blanks transferred by the feed mechanism, a pawl adapted to engage the blanks upon a reverse movement of the carrierplate and means adjacent to said plate for preventing its forward movement with blanks of excessive length. v

20. In combination in a bolt pointing and threading machine, means for automatically picking and transferring the blanks, a feed mechanism, a carrier-plate adapted to carry blanks of a predetermined length, means for supporting said blanks during the operation of the cutters, reciprocating cutters and a guide adapted. for supporting and retaining actions with relation to blanks of improper length.

2l. In combination in a machine of the class specified, a carrier-plate and means for introducing blanks to said plate, resilient connections for moving said plate in one direction, and means for reversing the movement of said plate unless it has been moved to an in.- dexing position.

22. In combination in a bolt pointing and vthreading machine, a carrier-plate provided with la plurality of adjustable disks provided with peripheral notches, and means for adjusting and locking said disks.

23. In combination in a bolt pointing and threading machine, a carrier-plate provided with a plurality of disks having peripheral notches, means for adjusting and locking said disks and means adjacent to said carrier-plate for holding the blanks.

24. In combination in a bolt pointing and threading machine, a feed mechanism including a reciprocating feed-slide, a rockshaft, a sleeve splined to said rock-shaft, a second sleeve operatively mounted with relation to the rock-shaft, a lever connecting said last-named sleeve and the feed-slide, and resilient connections intermediate of the two sleeves.

25. In combination in an automatic picking and transferring mechanism for bolt pointing and threading machines, an oscillatory picker, means borne upon said oscillatory picker adapted to rest upon the blanks and prevent overload of said picker, a constantly-rotating cam-shaft and connections intermediate of the cam -shaft and picker whereby the latter is moved at predetermined intervals.

26. Incombination in a bolt pointing and threading machine, a hopper, meansfor feeding the blanks and holding them subject to operating-tools, means for ejecting blanks of improper size transferred from said hopper, means for transferring the blanks from the hopper, reciprocating cutters and their spindles and resilient actuating means for said cutters.

27. In combination ina bolt pointing and threading machine, a feeding and carrying mechanism adapted to receiveand hold blanks for the operation of cutting-tools, reciprocating cutting-tools operatively mounted with rolation to-the carrying mechanism, means for actuating said tools resiliently and a stopplate dependent upon the position of the carrier mechanism for permitting or stopping reciprocating movement of the tools.

28. In a bolt pointing and threading machine, a spindle adapted to receive a threading-die, resilient means for advancing said spindle, a knock-off lever and means for actuating said lever at a plurality of points during the longitudinal movement of the spindle.

29. In combination in a bolt pointing and threading machine including reciprocating cutters and a blank feeding and carrying mechanism, of an oscillatory support adapted to support the blanks during the forward movement of the cutters, and means for reciprocating said support upon a movement of the carrier-plate with .its blanks.

30. In combination in a machine of the class specified,including automatic means for picking up and transferring blanks, resilient feeding and carrying mechanism, a reciprocating die-spindle, means coincident with said spindie for controlling the position of the cutters of the die,an actuating-lever for reciprocating the spindle and resilient connections intermediate of the die and actuating-lever.

v, 3l. In combination in a device of the class specified including a feeding mechanism and carrying mechanism adapted to feed and carry blanks, operating tools adapted to operate upon the blanks during their rotation in the carrying mechanism, a hopper borne upon the end of a shaft and provided with a gear, a main driving-shaft, a gear borne upon and driven by said shaft and movable axially thereof, and connections intermediate of said last-named gear and the hopper-shaft whereby an adjustment of the hopper will move said gear maintaining its mesh with the gear upon the hopper-shaft.

32. In combination in an automatic picking and transferring mechanism for bolt pointing and threading machines,an oscillatory picker adapted to be swung at predetermined intervals, a cam-shaft and connections intermediate of the cam-shaft and picker whereby the latter is moved, means included in said con- ICO IIO

nectionsfor clearing the picker mechanism upon its downward movement, and a detentfinger arranged upon the picker and adapted to rest upon the blanks in advance ot' said driving-shaft, Wherebj1 said last-named gear may be moved axially of its shaft whenever the hopper and appurtenant parts are moved toward or away from the picking mechanism.

34. In combination in a device of the class specified including automatic means for picking up, transferring, feeding and carrying blanks, tools adapted to operate upon said blanks, a rotary hopper mounted upon the end of a shaft, a driving-shaft, intermeshing gears borne upon the driving-shaft and hoppershaft, and meanswhereby said hopper may be adjusted without disarranging the adjustment of the intermeshing gears.

35. In combination in a machine of the class specified, a tool-spindle comprising a reciprocating and rotating mechanism, a cutting-tool borne upon the end of said spindle, an actuating-rod for said cutting-tool, and a ring normally concentric with said rod when the tool is in operating position and adapted upon its eccentric position to actuate said tool through its operating-rod.

36. In combination in a device of the class specified, a tool-spindle, means for reciprocating said spindle and means for rotating it, said spindle comprising a number of movable concentric members, a ring adapted to actuate the tool borne upon said spindle and normally concentric therewith, and connections 'intermediate of the ring and concentric members whereby upon a movement of the ring to an eccentric position, one or more of said members are moved.

37. In combination in a machine of the class specilied, a main operating-shaft, a reciproeating tool-spindle and means for rotating said spindle, a cutting-tool borne on the end ofthe spindle, said spindle being composed oi sections adapted to have arelative movement, said movement adapted to actuate the cuttingtool, and a normally concentric ring adapted upon displacement to cause a relative movement of the sections of the cutterspindle whereby the cutting-tool is actuated.

38. In combinationin a machine of the class specified, a carrier-plate comprising a ro-- tary disk provided with depressed portions, notched-work carrying-plates arranged Within' said depressed portions, and adjusting and locking screws secured in the disk and adapted for adjusting and locking actions with relation to the notched-Work carrying-disks.

This specification signed and witnessed this 22d day of March, A. D. 1901.

CHARLES A. JOHNSON.

In presence of- W. E. GRAHAM, C. W. COLVIN. 

